Abstract

Addition of Grignard reagents to the hexodiulose obtained from oxidation of 1,2:4,5-di- O-isopropylidene-β- d-fructopyranose gave the corresponding 3- C-substituted hexuloses. A simple procedure for the direct conversion of these C-alkylated or -arylated hexuloses (heating with pyridinium chloride) to new 3-substituted 5-hydroxymethyl-2-furancarboxaldehydes is described.

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